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Park JYC, King A, Björk V, English BW, Fedintsev A, Ewald CY. Strategic outline of interventions targeting extracellular matrix for promoting healthy longevity. Am J Physiol Cell Physiol 2023; 325:C90-C128. [PMID: 37154490 DOI: 10.1152/ajpcell.00060.2023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/28/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
The extracellular matrix (ECM), composed of interlinked proteins outside of cells, is an important component of the human body that helps maintain tissue architecture and cellular homeostasis. As people age, the ECM undergoes changes that can lead to age-related morbidity and mortality. Despite its importance, ECM aging remains understudied in the field of geroscience. In this review, we discuss the core concepts of ECM integrity, outline the age-related challenges and subsequent pathologies and diseases, summarize diagnostic methods detecting a faulty ECM, and provide strategies targeting ECM homeostasis. To conceptualize this, we built a technology research tree to hierarchically visualize possible research sequences for studying ECM aging. This strategic framework will hopefully facilitate the development of future research on interventions to restore ECM integrity, which could potentially lead to the development of new drugs or therapeutic interventions promoting health during aging.
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Affiliation(s)
- Ji Young Cecilia Park
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach, Switzerland
| | - Aaron King
- Foresight Institute, San Francisco, California, United States
| | | | - Bradley W English
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | | | - Collin Y Ewald
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach, Switzerland
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2
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Mao L, Wang L, Xu J, Zou J. The role of integrin family in bone metabolism and tumor bone metastasis. Cell Death Discov 2023; 9:119. [PMID: 37037822 PMCID: PMC10086008 DOI: 10.1038/s41420-023-01417-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 04/12/2023] Open
Abstract
Integrins have been the research focus of cell-extracellular matrix adhesion (ECM) and cytokine receptor signal transduction. They are involved in the regulation of bone metabolism of bone precursor cells, mesenchymal stem cells (MSCs), osteoblasts (OBs), osteoclasts (OCs), and osteocytes. Recent studies expanded and updated the role of integrin in bone metabolism, and a large number of novel cytokines were found to activate bone metabolism pathways through interaction with integrin receptors. Integrins act as transducers that mediate the regulation of bone-related cells by mechanical stress, fluid shear stress (FSS), microgravity, hypergravity, extracellular pressure, and a variety of physical factors. Integrins mediate bone metastasis of breast, prostate, and lung cancer by promoting cancer cell adhesion, migration, and survival. Integrin-mediated targeted therapy showed promising prospects in bone metabolic diseases. This review emphasizes the latest research results of integrins in bone metabolism and bone metastasis and provides a vision for treatment strategies.
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Affiliation(s)
- Liwei Mao
- School of Kinesiology, Shanghai University of Sport, 200438, Shanghai, China
| | - Lian Wang
- School of Kinesiology, Shanghai University of Sport, 200438, Shanghai, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, WA, 6009, Perth, Australia
| | - Jun Zou
- School of Kinesiology, Shanghai University of Sport, 200438, Shanghai, China.
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Gałdyszyńska M, Zwoliński R, Piera L, Szymański J, Jaszewski R, Drobnik J. Stiff substrates inhibit collagen accumulation via integrin α2β1, FAK and Src kinases in human atrial fibroblast and myofibroblast cultures derived from patients with aortal stenosis. Biomed Pharmacother 2023; 159:114289. [PMID: 36696802 DOI: 10.1016/j.biopha.2023.114289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
The aim of the study was to confirm whether cell substrate stiffness may participate in the regulation of fibrosis. The involvement of integrin α2β1, focal adhesion kinase (FAK) and Src kinase in signal transmission was investigated. Human atrial fibroblasts and myofibroblasts were cultured in both soft (2.23 ± 0.8 kPa) and stiff (8.28 ± 1.06 kPa) polyacrylamide gels. The cells were derived from the right atrium of patients with aortal stenosis undergoing surgery. The isolated cells, identified as fibroblasts or myofibroblasts, were stained positively with α smooth muscle actin, vimentin and desmin. The cultures settled on stiff gel demonstrated lower intracellular collagen and collagen type I telopeptide (PICP) levels; however, no changes in α1 chain of procollagen type I and III expression were noted. Inhibition of α2β1 integrin by TC-I 15 (10-7 and 10-8 M) or α2 integrin subunit silencing augmented intracellular collagen level. Moreover, FAK or Src kinase inhibitors increased collagen content within the culture. Lower TIMP4 secretion was reported within the stiff gel cultures but neither MMP 2 nor TIMP-1, 2 or 3 release was altered. The stiff substrate cultures also demonstrated lower interleukin-6 release. Substrate stiffness modified collagen deposition within the atrial fibroblast and myofibroblast cultures. The elasticity of the cellular environment exerts a regulatory influence on both synthesis and breakdown of collagen. Integrin α2β1, FAK and Src kinase activity participates in signal transmission, which may influence fibrosis in the atria of the human heart.
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Affiliation(s)
- M Gałdyszyńska
- Laboratory of Connective Tissue Metabolism, Department of Pathophysiology, Medical University of Lodz, Zeligowskiego 7/9, 90-752 Lodz, Poland
| | - R Zwoliński
- Department of Cardiosurgery, Medical University of Lodz, 92-215 Lodz, Poland
| | - L Piera
- Laboratory of Connective Tissue Metabolism, Department of Pathophysiology, Medical University of Lodz, Zeligowskiego 7/9, 90-752 Lodz, Poland
| | - J Szymański
- Research Laboratory CoreLab, Medical University of Lodz, 92-215 Lodz, Poland
| | - R Jaszewski
- Department of Cardiosurgery, Medical University of Lodz, 92-215 Lodz, Poland
| | - J Drobnik
- Laboratory of Connective Tissue Metabolism, Department of Pathophysiology, Medical University of Lodz, Zeligowskiego 7/9, 90-752 Lodz, Poland.
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Chen S, He T, Zhong Y, Chen M, Yao Q, Chen D, Shao Z, Xiao G. Roles of focal adhesion proteins in skeleton and diseases. Acta Pharm Sin B 2022; 13:998-1013. [PMID: 36970189 PMCID: PMC10031257 DOI: 10.1016/j.apsb.2022.09.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/04/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022] Open
Abstract
The skeletal system, which contains bones, joints, tendons, ligaments and other elements, plays a wide variety of roles in body shaping, support and movement, protection of internal organs, production of blood cells and regulation of calcium and phosphate metabolism. The prevalence of skeletal diseases and disorders, such as osteoporosis and bone fracture, osteoarthritis, rheumatoid arthritis, and intervertebral disc degeneration, increases with age, causing pain and loss of mobility and creating a huge social and economic burden globally. Focal adhesions (FAs) are macromolecular assemblies that are composed of the extracellular matrix (ECM), integrins, intracellular cytoskeleton and other proteins, including kindlin, talin, vinculin, paxillin, pinch, Src, focal adhesion kinase (FAK) and integrin-linked protein kinase (ILK) and other proteins. FA acts as a mechanical linkage connecting the ECM and cytoskeleton and plays a key role in mediating cell-environment communications and modulates important processes, such as cell attachment, spreading, migration, differentiation and mechanotransduction, in different cells in skeletal system by impacting distinct outside-in and inside-out signaling pathways. This review aims to integrate the up-to-date knowledge of the roles of FA proteins in the health and disease of skeletal system and focuses on the specific molecular mechanisms and underlying therapeutic targets for skeletal diseases.
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Affiliation(s)
- Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
| | - Tailin He
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yiming Zhong
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
| | - Mingjue Chen
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qing Yao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
| | - Di Chen
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Corresponding authors.
| | - Guozhi Xiao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen 518055, China
- Corresponding authors.
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Peng Y, Qu R, Feng Y, Huang X, Yang Y, Fan T, Sun B, Khan AU, Wu S, Dai J, Ouyang J. Regulation of the integrin αVβ3- actin filaments axis in early osteogenesis of human fibroblasts under cyclic tensile stress. Stem Cell Res Ther 2021; 12:523. [PMID: 34620239 PMCID: PMC8496073 DOI: 10.1186/s13287-021-02597-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/11/2021] [Indexed: 11/23/2022] Open
Abstract
Background Integrins play a prominent role in osteogenic differentiation by transmitting both mechanical and chemical signals. Integrin expression is closely associated with tensile stress, which has a positive effect on osteogenic differentiation. We investigated the relationship between integrin αVβ3 and tensile stress. Methods Human fibroblasts were treated with c (RGDyk) and lentivirus transduction to inhibit function of integrin αVβ3. Y-15, cytochalasin D and verteporfin were used to inhibit phosphorylation of FAK, polymerization of microfilament and function of nuclear YAP, respectively. Fibroblasts were exposed to a cyclic tensile stress of 10% at 0.5 Hz, once a day for 2 h each application. Fibroblasts were harvested on day 4 and 7 post-treatment. The expression of ALP, RUNX2, integrin αVβ3, β-actin, talin-1, FAK, vinculin, and nuclear YAP was detected by Western blot or qRT-PCR. The expression and distribution of integrin αVβ3, vinculin, microfilament and nuclear YAP. Results Cyclic tensile stress was found to promote expression of ALP and RUNX2. Inhibition of integrin αVβ3 activation downregulated the rearrangement of microfilament and the expression of ALP, RUNX2 and nuclear YAP. When the polymerization of microfilament was inhibited the expression of ALP, RUNX2 and nuclear YAP were decreased. The phosphorylation of FAK induced by cyclic tensile stress reduced by the inhibition of integrin αVβ3. The expression of ALP and RUNX2 was decreased by inhibition of phosphorylation of FAK and inhibition of nuclear YAP. Conclusions Cyclic tensile stress promotes osteogenesis of human fibroblasts via integrin αVβ3-microfilament axis. Phosphorylation of FAK and nuclear YAP participates in this process. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02597-y.
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Affiliation(s)
- Yan Peng
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Rongmei Qu
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Yanting Feng
- Department of Ophthalmology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510000, Guangdong, China
| | - Xiaolan Huang
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Yuchao Yang
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Tingyu Fan
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Bing Sun
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Asmat Ullah Khan
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Shutong Wu
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China
| | - Jingxing Dai
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China.
| | - Jun Ouyang
- Guangdong Provincial Key Laboratory of Medical Biomechanics and Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou, 510000, China.
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Hülskamp MD, Kronenberg D, Stange R. The small-molecule protein ligand interface stabiliser E7820 induces differential cell line specific responses of integrin α2 expression. BMC Cancer 2021; 21:571. [PMID: 34006252 PMCID: PMC8132423 DOI: 10.1186/s12885-021-08301-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/04/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The mechanism of small-molecule stabilised protein-protein interactions is of growing interest in the pharmacological discovery process. A plethora of different substances including the aromatic sulphonamide E7820 have been identified to act by such a mechanism. The process of E7820 induced CAPERα degradation and the resultant transcriptional down regulation of integrin α2 expression has previously been described for a variety of different cell lines and been made responsible for E7820's antiangiogenic activity. Currently the application of E7820 in the treatment of various malignancies including pancreas carcinoma and breast cancer is being investigated in pre-clinical and clinical trials. It has been shown, that integrin α2 deficiency has beneficial effects on bone homeostasis in mice. To transfer E7820 treatment to bone-related pathologies, as non-healing fractures, osteoporosis and bone cancer might therefore be beneficial. However, at present no data is available on the effect of E7820 on osseous cells or skeletal malignancies. METHODS Pre-osteoblastic (MC3T3 and Saos-2) cells and endothelial (eEnd2 cells and HUVECs) cells, each of human and murine origin respectively, were investigated. Vitality assay with different concentrations of E7820 were performed. All consecutive experiments were done at a final concentration of 50 ng/ml E7820. The expression and production of integrin α2 and CAPERα were investigated by quantitative real-time PCR and western blotting. Expression of CAPERα splice forms was differentiated by semi-quantitiative reverse transcriptase PCR. RESULTS Here we present the first data showing that E7820 can increase integrin α2 expression in the pre-osteoblast MC3T3 cell line whilst also reproducing canonical E7820 activity in HUVECs. We show that the aberrant activity of E7820 in MC3T3 cells is likely due to differential activity of CAPERα at the integrin α2 promoter, rather than due to differential CAPERα degradation or differential expression of CAPERα spliceforms. CONCLUSION The results presented here indicate that E7820 may not be suitable to treat certain malignancies of musculoskeletal origin, due to the increase in integrin α2 expression it may induce. Further investigation of the differential functioning of CAPERα and the integrin α2 promoter in cells of various origin would however be necessary to more clearly differentiate between cell lines that will positively respond to E7820 from those that will not.
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Affiliation(s)
- Michael David Hülskamp
- Department of Regenerative Musculoskeletal Medicine, Institute for Musculoskeletal Medicine, Westfälische Wilhelms-Universität Münster, Albert-Schweitzer Campus 1 Building W1, 48149, Münster, Germany
| | - Daniel Kronenberg
- Department of Regenerative Musculoskeletal Medicine, Institute for Musculoskeletal Medicine, Westfälische Wilhelms-Universität Münster, Albert-Schweitzer Campus 1 Building W1, 48149, Münster, Germany.
| | - Richard Stange
- Department of Regenerative Musculoskeletal Medicine, Institute for Musculoskeletal Medicine, Westfälische Wilhelms-Universität Münster, Albert-Schweitzer Campus 1 Building W1, 48149, Münster, Germany
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7
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Timmen M, Hidding H, Götte M, Khassawna TE, Kronenberg D, Stange R. The heparan sulfate proteoglycan Syndecan-1 influences local bone cell communication via the RANKL/OPG axis. Sci Rep 2020; 10:20510. [PMID: 33239699 PMCID: PMC7688641 DOI: 10.1038/s41598-020-77510-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 11/09/2020] [Indexed: 12/25/2022] Open
Abstract
The heparan sulfate proteoglycan Syndecan-1, a mediator of signals between the extracellular matrix and cells involved is able to interact with OPG, one of the major regulators of osteoclastogenesis. The potential of osteoblasts to induce osteoclastogenesis is characterized by a switch of OPG (low osteoclastogenic potential) towards RANKL production (high osteoclastogenic potential). In the present study, we investigated the influence of endogenous Syndecan-1 on local bone-cell-communication via the RANKL/OPG-axis in murine osteoblasts and osteoclasts in wild type and Syndecan-1 lacking cells. Syndecan-1 expression and secretion was increased in osteoblasts with high osteoclastogenic potential. Syndecan-1 deficiency led to increased OPG release by osteoblasts that decreased the availability of RANKL. In co-cultures of Syndecan-1 deficient osteoblasts with osteoclast these increased OPG in supernatant caused decreased development of osteoclasts. Syndecan-1 and RANKL level were increased in serum of aged WT mice, whereas Syndecan-1 deficient mice showed high serum OPG concentration. However, bone structure of Syndecan-1 deficient mice was not different compared to wild type. In conclusion, Syndecan-1 could be regarded as a new modulator of bone-cell-communication via RANKL/OPG axis. This might be of high impact during bone regeneration or bone diseases like cancer where Syndecan-1 expression is known to be even more prevalent.
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Affiliation(s)
- Melanie Timmen
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Muenster, Germany.
| | - Heriburg Hidding
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Muenster, Germany
| | - Martin Götte
- Department of Gynecology and Obstetrics, University Hospital Muenster, Muenster, Germany
| | - Thaqif El Khassawna
- Experimental Trauma Surgery, Justus-Liebig University Giessen, Giessen, Germany
| | - Daniel Kronenberg
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Muenster, Germany
| | - Richard Stange
- Department of Regenerative Musculoskeletal Medicine, Institute of Musculoskeletal Medicine, University Muenster, Muenster, Germany
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Saferding V, Hofmann M, Brunner JS, Niederreiter B, Timmen M, Magilnick N, Hayer S, Heller G, Steiner G, Stange R, Boldin M, Schabbauer G, Weigl M, Hackl M, Grillari J, Smolen JS, Blüml S. microRNA-146a controls age-related bone loss. Aging Cell 2020; 19:e13244. [PMID: 33085187 PMCID: PMC7681058 DOI: 10.1111/acel.13244] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/01/2020] [Accepted: 08/26/2020] [Indexed: 02/06/2023] Open
Abstract
Bone loss is one of the consequences of aging, leading to diseases such as osteoporosis and increased susceptibility to fragility fractures and therefore considerable morbidity and mortality in humans. Here, we identify microRNA‐146a (miR‐146a) as an essential epigenetic switch controlling bone loss with age. Mice deficient in miR‐146a show regular development of their skeleton. However, while WT mice start to lose bone with age, animals deficient in miR‐146a continue to accrue bone throughout their life span. Increased bone mass is due to increased generation and activity of osteoblasts in miR‐146a‐deficient mice as a result of sustained activation of bone anabolic Wnt signaling during aging. Deregulation of the miR‐146a target genes Wnt1 and Wnt5a parallels bone accrual and osteoblast generation, which is accompanied by reduced development of bone marrow adiposity. Furthermore, miR‐146a‐deficient mice are protected from ovariectomy‐induced bone loss. In humans, the levels of miR‐146a are increased in patients suffering fragility fractures in comparison with those who do not. These data identify miR‐146a as a crucial epigenetic temporal regulator which essentially controls bone homeostasis during aging by regulating bone anabolic Wnt signaling. Therefore, miR‐146a might be a powerful therapeutic target to prevent age‐related bone dysfunctions such as the development of bone marrow adiposity and osteoporosis.
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Affiliation(s)
- Victoria Saferding
- Department of Rheumatology Medical University of Vienna Vienna Austria
- Ludwig Boltzmann Institute for Arthritis and Rehabilitation Vienna Austria
| | - Melanie Hofmann
- Ludwig Boltzmann Institute for Arthritis and Rehabilitation Vienna Austria
- Institute for Vascular Biology Centre for Physiology and Pharmacology Medical University of Vienna Vienna Austria
| | - Julia S. Brunner
- Institute for Vascular Biology Centre for Physiology and Pharmacology Medical University of Vienna Vienna Austria
| | | | - Melanie Timmen
- Department of Regenerative Musculoskeletal Medicine Institute of Musculoskeletal Medicine (IMM) University Hospital Münster Münster Germany
| | - Nathaniel Magilnick
- Department of Molecular and Cellular Biology Beckman Research Institute City of Hope Duarte California USA
| | - Silvia Hayer
- Department of Rheumatology Medical University of Vienna Vienna Austria
| | - Gerwin Heller
- Department of Medicine I Medical University of Vienna Vienna Austria
| | - Günter Steiner
- Department of Rheumatology Medical University of Vienna Vienna Austria
| | - Richard Stange
- Department of Regenerative Musculoskeletal Medicine Institute of Musculoskeletal Medicine (IMM) University Hospital Münster Münster Germany
| | - Mark Boldin
- Department of Molecular and Cellular Biology Beckman Research Institute City of Hope Duarte California USA
| | - Gernot Schabbauer
- Institute for Vascular Biology Centre for Physiology and Pharmacology Medical University of Vienna Vienna Austria
| | - Moritz Weigl
- TAmiRNA GmbH Vienna Austria
- Austrian Cluster for Tissue Regeneration Vienna Austria
| | - Matthias Hackl
- TAmiRNA GmbH Vienna Austria
- Austrian Cluster for Tissue Regeneration Vienna Austria
| | - Johannes Grillari
- Austrian Cluster for Tissue Regeneration Vienna Austria
- Department of Biotechnology Institute for Molecular Biotechnology BOKU – University of Natural Resources and Life Sciences Vienna Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in AUVA Research Center Vienna Austria
| | - Josef S. Smolen
- Department of Rheumatology Medical University of Vienna Vienna Austria
| | - Stephan Blüml
- Department of Rheumatology Medical University of Vienna Vienna Austria
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Zhang M, Wang H, Wang M, Liu Y, Liao Y, Liu Y, Zhang Y, Ma T, Chen J. Reduced expression of α2 integrin is involved in T-2 toxin-induced matrix degradation in C28/I2 cells and cartilages from rats administrated with T-2 toxin. Toxicon 2020; 188:127-133. [PMID: 33080268 DOI: 10.1016/j.toxicon.2020.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/25/2020] [Accepted: 10/15/2020] [Indexed: 01/28/2023]
Abstract
T-2 toxin is a mycotoxin demonstrating several harmful effects on chondrocyte and cartilage functions. In the present study, we investigated the toxic effects of T-2 toxin on cartilage matrix degradation and evaluated the involvement of α2 integrin in T-2 toxin-induced matrix damage. In C28/I2 cells, T-2 toxin decreased cell viability in a dose-dependent manner. Regarding matrix degradation, T-2 toxin decreased type II collagen and increased matrix metalloproteinase 13 (MMP-13) expression. Moreover, T-2 toxin significantly decreased the expression of α2 integrin in C28/I2 cells, indicating impaired chondrocyte-matrix interaction. Additionally, cartilage matrix degradation with decreased type II collagen expression was observed in the animal model, established using rats treated with T-2 toxin, with or without a selenium-deficient diet, presenting chondrocytes with necrosis in the deep zone. Simultaneously, rats administered T-2 toxin demonstrated overtly decreased α2 integrin expression in the articular cartilage. In the T-2 toxin plus selenium-deficient diet group, α2 integrin expression was further decreased in the deep zone of the cartilage. Furthermore, inhibition of α2β1 integrin in C28/I2 cells could induce MMP-13 activation and type II collagen reduction, contributing to matrix degradation. These results indicate that the cytotoxic effects of T-2 toxin on chondrocyte damage and cartilage matrix degradation are associated with α2 integrin downregulation, by reducing type II collagen and MMP-13 activation.
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Affiliation(s)
- Meng Zhang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hui Wang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Mengying Wang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yinan Liu
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yucheng Liao
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yue Liu
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ying Zhang
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Tianyou Ma
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jinghong Chen
- School of Public Health, Health Science Center, Key Laboratory of Trace Elements and Endemic Diseases in National Health Commission of PR China, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Bourgot I, Primac I, Louis T, Noël A, Maquoi E. Reciprocal Interplay Between Fibrillar Collagens and Collagen-Binding Integrins: Implications in Cancer Progression and Metastasis. Front Oncol 2020; 10:1488. [PMID: 33014790 PMCID: PMC7461916 DOI: 10.3389/fonc.2020.01488] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/13/2020] [Indexed: 12/14/2022] Open
Abstract
Cancers are complex ecosystems composed of malignant cells embedded in an intricate microenvironment made of different non-transformed cell types and extracellular matrix (ECM) components. The tumor microenvironment is governed by constantly evolving cell-cell and cell-ECM interactions, which are now recognized as key actors in the genesis, progression and treatment of cancer lesions. The ECM is composed of a multitude of fibrous proteins, matricellular-associated proteins, and proteoglycans. This complex structure plays critical roles in cancer progression: it functions as the scaffold for tissues organization and provides biochemical and biomechanical signals that regulate key cancer hallmarks including cell growth, survival, migration, differentiation, angiogenesis, and immune response. Cells sense the biochemical and mechanical properties of the ECM through specialized transmembrane receptors that include integrins, discoidin domain receptors, and syndecans. Advanced stages of several carcinomas are characterized by a desmoplastic reaction characterized by an extensive deposition of fibrillar collagens in the microenvironment. This compact network of fibrillar collagens promotes cancer progression and metastasis, and is associated with low survival rates for cancer patients. In this review, we highlight how fibrillar collagens and their corresponding integrin receptors are modulated during cancer progression. We describe how the deposition and alignment of collagen fibers influence the tumor microenvironment and how fibrillar collagen-binding integrins expressed by cancer and stromal cells critically contribute in cancer hallmarks.
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Affiliation(s)
| | | | | | | | - Erik Maquoi
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liège, Liège, Belgium
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11
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Increased Collagen Turnover Impairs Tendon Microstructure and Stability in Integrin α2β1-Deficient Mice. Int J Mol Sci 2020; 21:ijms21082835. [PMID: 32325713 PMCID: PMC7215526 DOI: 10.3390/ijms21082835] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 11/18/2022] Open
Abstract
Integrins are a family of transmembrane proteins, involved in substrate recognition and cell adhesion in cross-talk with the extra cellular matrix. In this study, we investigated the influence of integrin α2β1 on tendons, another collagen type I-rich tissue of the musculoskeletal system. Morphological, as well as functional, parameters were analyzed in vivo and in vitro, comparing wild-type against integrin α2β1 deficiency. Tenocytes lacking integrin α2β1 produced more collagen in vitro, which is similar to the situation in osseous tissue. Fibril morphology and biomechanical strength proved to be altered, as integrin α2β1 deficiency led to significantly smaller fibrils as well as changes in dynamic E-modulus in vivo. This discrepancy can be explained by a higher collagen turnover: integrin α2β1-deficient cells produced more matrix, and tendons contained more residual C-terminal fragments of type I collagen, as well as an increased matrix metalloproteinase-2 activity. A greatly decreased percentage of non-collagenous proteins may be the cause of changes in fibril diameter regulation and increased the proteolytic degradation of collagen in the integrin-deficient tendons. The results reveal a significant impact of integrin α2β1 on collagen modifications in tendons. Its role in tendon pathologies, like chronic degradation, will be the subject of future investigations.
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12
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Domnick C, Wieskötter B, Raschke MJ, Schulze M, Kronenberg D, Wefelmeier M, Langer MF, Herbort M. Evaluation of biomechanical properties: are porcine flexor tendons and bovine extensor tendons eligible surrogates for human tendons in in vitro studies? Arch Orthop Trauma Surg 2016; 136:1465-71. [PMID: 27475640 DOI: 10.1007/s00402-016-2529-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Porcine flexor tendons, bovine extensor tendons, and human (semitendinosus) tendons are frequently used as substitutes for human ACL grafts in biomechanical in vitro studies. This study compares the biomechanical properties and structural differences of these tendons. MATERIALS AND METHODS In this biomechanical study, fresh-frozen porcine flexor tendons, bovine extensor tendons, and human semitendinosus tendons were used (n = 36). The tendons were mounted in a uniaxial testing machine (Zwick/Roell) with cryo-clamps, leaving a 60 mm tendon part free between the two clamps. Specimens have been loaded to failure to evaluate the biomechanical parameters stiffness, yield load, and maximum load. A Total Collagen Assay Kit was used to detect differences in the total collagen type I concentration (n = 30). A one-way ANOVA was performed to detect differences in the means. The significance level was set at p < 0.05. RESULTS There were no significant differences in the stiffness between the groups (bovine 194 ± 43 N/mm, porcine 211 ± 63 N/mm, and human cadaveric 208 ± 58 N/mm). The yield and maximum loads were high (>1000 N) in all groups, but they were significantly increased in both animal specimens (means of 1681-1795 N) compared with human cadaveric specimen (means of 1289-1406 N; p < 0.01). No difference in the collagen type I concentration was detected (N.S.). CONCLUSION Porcine flexor and bovine extensor tendons are eligible substitutes with similar stiffness and high failure loads compared with human cadaveric semitendinosus tendons in in vitro studies.
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Affiliation(s)
- C Domnick
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany.
| | - B Wieskötter
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany
| | - M J Raschke
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany
| | - M Schulze
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany
| | - D Kronenberg
- Institute of Experimental Musculoskeletal Medicine, Westphalian Wilhelms University Muenster, Muenster, Germany
| | - M Wefelmeier
- Department of Operative Dentistry, Westphalian Wilhelms University Muenster, Muenster, Germany
| | - M F Langer
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany
| | - M Herbort
- Department of Trauma, Hand and Reconstructive Surgery, Westphalian Wilhelms University Muenster, Waldeyer Strasse 1, 48149, Muenster, Germany
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13
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Tharmalingam S, Hampson DR. The Calcium-Sensing Receptor and Integrins in Cellular Differentiation and Migration. Front Physiol 2016; 7:190. [PMID: 27303307 PMCID: PMC4880553 DOI: 10.3389/fphys.2016.00190] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/11/2016] [Indexed: 12/12/2022] Open
Abstract
The calcium-sensing receptor (CaSR) is a widely expressed homodimeric G-protein coupled receptor structurally related to the metabotropic glutamate receptors and GPRC6A. In addition to its well characterized role in maintaining calcium homeostasis and regulating parathyroid hormone release, evidence has accumulated linking the CaSR with cellular differentiation and migration, brain development, stem cell engraftment, wound healing, and tumor growth and metastasis. Elevated expression of the CaSR in aggressive metastatic tumors has been suggested as a potential novel prognostic marker for predicting metastasis, especially to bone tissue where extracellular calcium concentrations may be sufficiently high to activate the receptor. Recent evidence supports a model whereby CaSR-mediated activation of integrins promotes cellular migration. Integrins are single transmembrane spanning heterodimeric adhesion receptors that mediate cell migration by binding to extracellular matrix proteins. The CaSR has been shown to form signaling complexes with the integrins to facilitate both the movement and differentiation of cells, such as neurons during normal brain development and tumor cells under pathological circumstances. Thus, CaSR/integrin complexes may function as a universal cell migration or homing complex. Manipulation of this complex may be of potential interest for treating metastatic cancers, and for developmental disorders pertaining to aberrant neuronal migration.
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Affiliation(s)
| | - David R Hampson
- Pharmaceutical Sciences, University of Toronto Toronto, ON, Canada
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14
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Lo YP, Liu YS, Rimando MG, Ho JHC, Lin KH, Lee OK. Three-dimensional spherical spatial boundary conditions differentially regulate osteogenic differentiation of mesenchymal stromal cells. Sci Rep 2016; 6:21253. [PMID: 26884253 PMCID: PMC4756701 DOI: 10.1038/srep21253] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 01/20/2016] [Indexed: 01/09/2023] Open
Abstract
The spatial boundary condition (SBC) arising from the surrounding microenvironment imposes specific geometry and spatial constraints that affect organogenesis and tissue homeostasis. Mesenchymal stromal cells (MSCs) sensitively respond to alterations of mechanical cues generated from the SBC. However, mechanical cues provided by a three-dimensional (3D) environment are deprived in a reductionist 2D culture system. This study investigates how SBC affects osteogenic differentiation of MSCs using 3D scaffolds with monodispersed pores and homogenous spherical geometries. MSCs cultured under SBCs with diameters of 100 and 150 μm possessed the greatest capability of osteogenic differentiation. This phenomenon was strongly correlated with MSC morphology, organization of actin cytoskeleton, and distribution of focal adhesion involving α2 and α5 integrins. Further silencing either α2 or α5 integrin significantly reduced the above mentioned mechanosensitivity, indicating that the α2 and α5 integrins as mechano-sensitive molecules mediate MSCs' ability to provide enhanced osteogenic differentiation in response to different spherical SBCs. Taken together, the findings provide new insights regarding how MSCs respond to mechanical cues from the surrounding microenvironment in a spherical SBC, and such biophysical stimuli should be taken into consideration in tissue engineering and regenerative medicine in conjunction with biochemical cues.
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Affiliation(s)
- Yin-Ping Lo
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan
| | - Yi-Shiuan Liu
- Stem Cell Research Center, National Yang-Ming University, Taipei 11221, Taiwan
| | - Marilyn G Rimando
- Taiwan International Graduate Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan
| | - Jennifer Hui-Chun Ho
- Center for Stem Cell Research, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan.,Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei 11031, Taiwan.,Department of Ophthalmology, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
| | - Keng-Hui Lin
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Oscar K Lee
- Taipei City Hospital, Taipei 10341, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei 11221, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
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15
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Zeltz C, Gullberg D. The integrin-collagen connection--a glue for tissue repair? J Cell Sci 2016; 129:653-64. [PMID: 26857815 DOI: 10.1242/jcs.180992] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The α1β1, α2β1, α10β1 and α11β1 integrins constitute a subset of the integrin family with affinity for GFOGER-like sequences in collagens. Integrins α1β1 and α2β1 were originally identified on a subset of activated T-cells, and have since been found to be expressed on a number of cell types including platelets (α2β1), vascular cells (α1β1, α2β1), epithelial cells (α1β1, α2β1) and fibroblasts (α1β1, α2β1). Integrin α10β1 shows a distribution that is restricted to mesenchymal stem cells and chondrocytes, whereas integrin α11β1 appears restricted to mesenchymal stem cells and subsets of fibroblasts. The bulk of the current literature suggests that collagen-binding integrins only have a limited role in adult connective tissue homeostasis, partly due to a limited availability of cell-binding sites in the mature fibrillar collagen matrices. However, some recent data suggest that, instead, they are more crucial for dynamic connective tissue remodeling events--such as wound healing--where they might act specifically to remodel and restore the tissue architecture. This Commentary discusses the recent development in the field of collagen-binding integrins, their roles in physiological and pathological settings with special emphasis on wound healing, fibrosis and tumor-stroma interactions, and include a discussion of the most recently identified newcomers to this subfamily--integrins α10β1 and α11β1.
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Affiliation(s)
- Cédric Zeltz
- Department of Biomedicine and Centre for Cancer Biomarkers, University of Bergen, Jonas Lies vei 91, Bergen N-5009, Norway
| | - Donald Gullberg
- Department of Biomedicine and Centre for Cancer Biomarkers, University of Bergen, Jonas Lies vei 91, Bergen N-5009, Norway
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16
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Nacre extract restores the mineralization capacity of subchondral osteoarthritis osteoblasts. J Struct Biol 2015; 192:500-509. [DOI: 10.1016/j.jsb.2015.10.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 12/16/2022]
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17
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El Azreq MA, Arseneault C, Boisvert M, Pagé N, Allaeys I, Poubelle PE, Tessier PA, Aoudjit F. Cooperation between IL-7 Receptor and Integrin α2β1 (CD49b) Drives Th17-Mediated Bone Loss. THE JOURNAL OF IMMUNOLOGY 2015; 195:4198-209. [DOI: 10.4049/jimmunol.1500437] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 08/20/2015] [Indexed: 01/15/2023]
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Xin W, Heilig J, Paulsson M, Zaucke F. Collagen II regulates chondroycte integrin expression profile and differentiation. Connect Tissue Res 2015; 56:307-14. [PMID: 25803621 DOI: 10.3109/03008207.2015.1026965] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Collagen II is the major fibril-forming collagen in cartilage. Complete absence of collagen II in mice is not compatible with life and in humans mutations in the COL2A1 gene lead to osteochondrodysplasias with diverse phenotypes. However, mechanistic studies on how chondrocytes respond to a lack of collagen II in their extracellular matrix are limited. Primary mouse chondrocytes were isolated from knee joints of newborn mice and transfected with siRNA targeting Col2α1 to suppress collagen II expression. The expression of integrin receptors and matrix proteins was investigated by RT-PCR and immunoblots. The localization of matrix components was evaluated by immunostaining. Signaling pathways and the differentiation state of chondrocytes was monitored by RT-PCR and flow cytometry. We demonstrate that in the absence of collagen II chondrocytes start to produce collagen I. Some binding partners of collagen II are partially lost from the matrix while other proteins, e.g. COMP, were still found associated with the newly formed collagen network. The lack of collagen II induced changes in the expression profile of integrins. Further, we detected alterations in the Indian hedgehog/parathyroid hormone-related protein (Ihh/PTHrP) pathway that were accompanied by changes in the differentiation state of chondrocytes. Collagen II seems not to be essential for chondrocyte survival in culture but it plays an important role in maintaining chondrocyte differentiation. We suggest that a crosstalk between extracellular matrix and cells via integrins and the Ihh/PTHrP pathway is involved in regulating the differentiation state of chondrocytes.
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Affiliation(s)
- Wei Xin
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University , Jinan , China
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19
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Marie PJ, Haÿ E, Saidak Z. Integrin and cadherin signaling in bone: role and potential therapeutic targets. Trends Endocrinol Metab 2014; 25:567-75. [PMID: 25034128 DOI: 10.1016/j.tem.2014.06.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 06/18/2014] [Accepted: 06/19/2014] [Indexed: 12/16/2022]
Abstract
Cell-cell and cell-matrix interactions mediated by cell adhesion molecules are important mechanisms controlling cell fate and function. Here, we review recent advances in the implication of the cell adhesion molecules integrins and cadherins in the control of osteoblastogenesis and bone formation. We discuss emerging evidence indicating that signaling pathways mediated by integrins and cadherins and their crosstalk with the Wnt/β-catenin signaling pathway regulate osteogenic differentiation and mechanotransduction. We also offer a comprehensive view of the mechanisms by which some integrins and cadherins control the differentiation of cells of the osteoblast lineage in bone marrow niches. Understanding how specific integrins or cadherins may promote osteogenic cell differentiation, bone formation, and repair may lead to novel therapeutic strategies.
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Affiliation(s)
- Pierre J Marie
- UMR-1132 INSERM and University Paris Diderot, Sorbonne Paris Cité, Paris, 75475 cedex 10, France.
| | - Eric Haÿ
- UMR-1132 INSERM and University Paris Diderot, Sorbonne Paris Cité, Paris, 75475 cedex 10, France
| | - Zuzana Saidak
- UMR-1132 INSERM and University Paris Diderot, Sorbonne Paris Cité, Paris, 75475 cedex 10, France
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20
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Timmen M, Hidding H, Wieskötter B, Baum W, Pap T, Raschke MJ, Schett G, Zwerina J, Stange R. Influence of antiTNF-alpha antibody treatment on fracture healing under chronic inflammation. BMC Musculoskelet Disord 2014; 15:184. [PMID: 24885217 PMCID: PMC4059090 DOI: 10.1186/1471-2474-15-184] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 05/16/2014] [Indexed: 12/29/2022] Open
Abstract
Background The overexpression of tumor necrosis factor (TNF)-α leads to systemic as well as local loss of bone and cartilage and is also an important regulator during fracture healing. In this study, we investigate how TNF-α inhibition using a targeted monoclonal antibody affects fracture healing in a TNF-α driven animal model of human rheumatoid arthritis (RA) and elucidate the question whether enduring the anti TNF-α therapy after trauma is beneficial or not. Methods A standardized femur fracture was applied to wild type and human TNF-α transgenic mice (hTNFtg mice), which develop an RA-like chronic polyarthritis. hTNFtg animals were treated with anti-TNF antibody (Infliximab) during the fracture repair. Untreated animals served as controls. Fracture healing was evaluated after 14 and 28 days of treatment by clinical assessment, biomechanical testing and histomorphometry. Results High levels of TNF-α influence fracture healing negatively, lead to reduced cartilage and more soft tissue in the callus as well as decreased biomechanical bone stability. Blocking TNF-α in hTNFtg mice lead to similar biomechanical and histomorphometrical properties as in wild type. Conclusions High levels of TNF-α during chronic inflammation have a negative impact on fracture healing. Our data suggest that TNF-α inhibition by an anti-TNF antibody does not interfere with fracture healing.
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Affiliation(s)
- Melanie Timmen
- Institute for Experimental Muskuloskeletal Medicine IEMM, University Hospital Muenster, Muenster, Germany.
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21
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Docheva D, Popov C, Alberton P, Aszodi A. Integrin signaling in skeletal development and function. ACTA ACUST UNITED AC 2014; 102:13-36. [DOI: 10.1002/bdrc.21059] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 01/14/2014] [Indexed: 12/22/2022]
Affiliation(s)
- Denitsa Docheva
- Experimental Surgery and Regenerative Medicine, Department of Surgery; Ludwig-Maximilians-University; 80336 Munich Germany
| | - Cvetan Popov
- Experimental Surgery and Regenerative Medicine, Department of Surgery; Ludwig-Maximilians-University; 80336 Munich Germany
| | - Paolo Alberton
- Experimental Surgery and Regenerative Medicine, Department of Surgery; Ludwig-Maximilians-University; 80336 Munich Germany
| | - Attila Aszodi
- Experimental Surgery and Regenerative Medicine, Department of Surgery; Ludwig-Maximilians-University; 80336 Munich Germany
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22
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Zeltz C, Orgel J, Gullberg D. Molecular composition and function of integrin-based collagen glues-introducing COLINBRIs. Biochim Biophys Acta Gen Subj 2013; 1840:2533-48. [PMID: 24361615 DOI: 10.1016/j.bbagen.2013.12.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 12/13/2013] [Accepted: 12/14/2013] [Indexed: 01/06/2023]
Abstract
BACKGROUND Despite detailed knowledge about the structure and signaling properties of individual collagen receptors, much remains to be learned about how these receptors participate in linking cells to fibrillar collagen matrices in tissues. In addition to collagen-binding integrins, a group of proteins with affinity both for fibrillar collagens and integrins link these two protein families together. We have introduced the name COLINBRI (COLlagen INtegrin BRIdging) for this set of molecules. Whereas collagens are the major building blocks in tissues and defects in these structural proteins have severe consequences for tissue integrity, the mild phenotypes of the integrin type of collagen receptors have raised questions about their importance in tissue biology and pathology. SCOPE OF REVIEW We will discuss the two types of cell linkages to fibrillar collagen (direct- versus indirect COLINBRI-mediated) and discuss how the parallel existence of direct and indirect linkages to collagens may ensure tissue integrity. MAJOR CONCLUSIONS The observed mild phenotypes of mice deficient in collagen-binding integrins and the relatively restricted availability of integrin-binding sequences in mature fibrillar collagen matrices support the existence of indirect collagen-binding mechanisms in parallel with direct collagen binding in vivo. GENERAL SIGNIFICANCE A continued focus on understanding the molecular details of cell adhesion mechanisms to collagens will be important and will benefit our understanding of diseases like tissue- and tumor fibrosis where collagen dynamics are disturbed. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
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Affiliation(s)
- Cédric Zeltz
- Department of Biomedicine and Centre for Cancer Biomarkers, Norwegian Centre of Excellence, University of Bergen, Jonas Lies vei 91, N-5009 Bergen, Norway
| | - Joseph Orgel
- Departments of Biology, Physics and Biomedical Engineering, Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, 3440 S. Dearborn Ave, Chicago, IL 60616, USA
| | - Donald Gullberg
- Department of Biomedicine and Centre for Cancer Biomarkers, Norwegian Centre of Excellence, University of Bergen, Jonas Lies vei 91, N-5009 Bergen, Norway.
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El Azreq MA, Boisvert M, Cesaro A, Pagé N, Loubaki L, Allaeys I, Chakir J, Poubelle PE, Tessier PA, Aoudjit F. α2β1 integrin regulates Th17 cell activity and its neutralization decreases the severity of collagen-induced arthritis. THE JOURNAL OF IMMUNOLOGY 2013; 191:5941-50. [PMID: 24244022 DOI: 10.4049/jimmunol.1301940] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Th17 cells play a critical role in the pathogenesis of rheumatoid arthritis (RA), but the mechanisms by which these cells regulate the development of RA are not fully understood. We have recently shown that α2β1 integrin, the receptor of type I collagen, is the major collagen-binding integrin expressed by human Th17 cells. In this study, we examined the role of α2β1 integrin in Th17-mediated destructive arthritis in the murine model of collagen-induced arthritis (CIA). We found that α2β1 integrin is expressed on synovial Th17 cells from CIA mice and its neutralization with a specific mAb significantly reduced inflammation and cartilage degradation, and protected the mice from bone erosion. Blockade of α2β1 integrin led to a decrease in the number of Th17 cells in the joints and to a reduction of IL-17 levels in CIA mice. This was associated with an inhibition of receptor activator of NF-κB ligand levels and osteoclast numbers, and reduction of bone loss. We further show that α2β1 integrin is expressed on synovial Th17 cells from RA patients, and that its ligation with collagen costimulated the production of IL-17 by polarized human Th17 cells by enhancing the expression of retinoic acid receptor-related orphan receptor C through ERK and PI3K/AKT. Our findings provide the first evidence, to our knowledge, that α2β1 integrin is an important pathway in Th17 cell activation in the pathogenesis of CIA, suggesting that its blockade can be beneficial for the treatment of RA and other Th17-associated autoimmune diseases.
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Affiliation(s)
- Mohammed-Amine El Azreq
- *Axe de Recherche sur les Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Ville de Québec, Québec G1V 4G2, Canada
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